I believe that it has something to do with the playing WAV files and has nothing to do with embossing at all. Warren In a message dated 7/7/2004 9:03:41 AM Central Standard Time, dg140@xxxxxxxxxxxxxxxxxxx writes: Does anyone know what is meant by "autoconstant" in terms of Braille embossers? The Juliet here has an option in its menus for incrementing autoconstant by 1 second intervals. Charles